Tengliu's Blessing; Forget-Me-Not

"Amidst the snow that covers the tips of mountains, between the valleys that carve their way through solid rock and ice, regardless of era, or influence of the greater world, unnamed flowers would bloom. Planted by a woman from an age long forgotten by most, they are proof that life can thrive even in the most hostile of environments. 
Alas, one day that woman would have never returned, no more flowers planted by the hand of a person.
Yet, the year after, they were still here. Just like today, all these centuries later. A memory held by the world, the flower subsequently dubbed "Forget-Me-Not", a tribute paid to a woman called Tengliu."

- A Chronicle of the World, pg. 11

Whenever you enter your Bladesong, you may decide for a spectral glyph in a 10ft. emanation, appearing akin to a white flower that moves with you, to be created beneath your feet.
It ends when your bladesong ends.

While this spectral glyph is active, you receive the following benefit depending on the bloom cycle that you are in. Upon creation, it starts at the first stage, before it progresses onto the next at the start of each subsequent turn that you take, repeating itself until the glyph ends.

1. Flower Initiation: Hostile creatures caught within the emanation, when it is created, make a dexterity saving throw against your spellcasting DC. On a failure, they have the Frozen condition, on a success, they have the Thawed condition. Both conditions last until the end of your Bladesong, a creature who receives the Frozen condition has the Thawed condition removed from them, and vice versa, if they have been affected by it.

2. Budding: You gain a bonus to your Armor class equal to your Intelligence Modifier against enemies with the Frozen condition. Creatures with the Thawed condition gain a bonus to their to hit against you equal to half your Intelligence Modifier rounded down instead.  

3. Blooming: You may add your Intelligence Modifier to saving throws made against creatures with the Frozen condition. You have a penalty to saving throws made against enemies with the Thawed condition equal to half your Intelligence Modifier rounded down instead.

4. Senescence: You may add your Intelligence Modifier to the to hit bonus of your melee attacks against creatures with the Frozen condition. You have a penalty to the to hit of your melee attacks against creatures with the Thawed condition equal to half of your Intelligence Modifier rounded down instead .